{"id":"F2006B06791","name":"AD/SC7/16 - Wing Lower Skin/Wing Lift Strut Fairing - Inspection","slug":"ad-sc7-16-wing-lower-skin-wing-lift-strut-fairing-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114644,"registerId":"commonwealth-F2006B06791-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SC7/16 - Wing Lower Skin/Wing Lift Strut Fairing - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Short SC7 (Skyvan) Series Aeroplanes\n\n \n\nAD/SC7/16 Wing Lower Skin/Wing Lift Strut Fairing - Inspection 2/80\n\nApplicability: All Skyvan series 3, 3A and 3M. Document:  Shorts SB No. 57-63.\n\nCompliance: Within 100 hours time in service after 30 April 1980 and thereafter at intervals not exceeding 100 hours time in service until modified in accordance with SB No. 57-64.\n\n \n\nBackground:  Damage to the wing lower skin can occur over a period of time due to incorrect location of the wing lift strut fairing.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The text does not indicate any change in scope from the original intent. It applies to the same aircraft types and prescribes recurring inspections until the specified modification is carried out (Applicability; Compliance)."},"complexity_factors":["Narrow applicability limited to Short SC7 (Skyvan) series 3, 3A and 3M (Applicability).","Simple, repeatable compliance interval (every ≤100 hours) and a clear initial start point (within 100 hours after 30 April 1980) (Compliance).","Dependence on external technical documents (Shorts SB No. 57-63 for inspection procedures and SB No. 57-64 for modification) adds moderate procedural complexity (Document).","Outcome conditionality: inspections continue until a specified modification is fitted, creating an ongoing compliance loop (Compliance).","Technical judgment required in performing inspections and modifications (Background; Document), but not specified in detail within the directive text itself."],"plain_english_summary":"Operators of Short SC7 (Skyvan) series 3, 3A and 3M must carry out recurring inspections of the wing lower skin and wing lift strut fairing placement, beginning within 100 hours TIS after 30 April 1980 and repeating at intervals not exceeding 100 hours until the aeroplane is modified per the manufacturer’s service bulletin. The rule, funded by operators, aims to detect mislocated fairings before they cause progressive structural wing damage."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused on a specific maintenance requirement for a specific aircraft type. It has not expanded beyond its original purpose of addressing the wing skin/fairing inspection issue."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 3 defined applicability criteria (aircraft series)","Single compliance pathway with clear time intervals","No nested exceptions or conditional logic","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Straightforward cause-and-effect relationship (fairing mislocation → skin damage → inspection required)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) for a specific type of aircraft: the **Short SC7 Skyvan** (series 3, 3A, and 3M models).\n\n**What it does:**\n- **Requires mandatory inspections** of the wing lower skin and wing lift strut fairing on these aircraft.\n- **Why:** Because incorrect positioning of the wing lift strut fairing can cause damage to the wing lower skin over time, potentially compromising flight safety.\n\n**Who it affects:**\n- Owners and operators of Short SC7 Skyvan aircraft (series 3, 3A, and 3M).\n- Maintenance engineers responsible for these aircraft.\n\n**What must be done:**\n- **First inspection:** Must be completed within 100 hours of flight time after 30 April 1980.\n- **Ongoing inspections:** Must be repeated every 100 hours of flight time until the aircraft is modified according to **Service Bulletin No. 57-64** (a manufacturer's technical instruction for fixing the problem permanently).\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety orders. Failing to comply is an offence and puts aircraft safety at risk. This particular AD addresses a structural integrity issue that could lead to wing damage if left unchecked."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sc7-16-wing-lower-skin-wing-lift-strut-fairing-inspection","history":"/api/acts/ad-sc7-16-wing-lower-skin-wing-lift-strut-fairing-inspection/history","analysis":"/api/acts/ad-sc7-16-wing-lower-skin-wing-lift-strut-fairing-inspection/analysis","conflicts":"/api/acts/ad-sc7-16-wing-lower-skin-wing-lift-strut-fairing-inspection/conflicts","importantCases":"/api/acts/ad-sc7-16-wing-lower-skin-wing-lift-strut-fairing-inspection/important-cases","documents":"/api/acts/ad-sc7-16-wing-lower-skin-wing-lift-strut-fairing-inspection/documents"}}